Eegtal



(No Model) O. PEDBRSON.

REGTAL SPECULUM. No. 583,932. Patented June 8,1897.

Sm mm @Yak am. MW-

UNITED STATES PATENT OEEicE.

OLE PEDERSON, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO DAVID J.

Y KENNELLY, OF SAME PLACE.

REGTAL S SPECIFICATION forming part of Letters Patent N o. 583,932,dated June 8, 1897'.

Application led May 14, 1896.

To @ZL wiz/0m, t may concern.-

Be it known that I, OLE PEDERSON, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented certain new and useful Improvements in aCombined Rectal Dilator and Speculnm, of which the following is a full,clear, and exact description, reference beinghad to the accompanyingdrawings, which form a part of this specification.

My invention relates to certain new and useful improvements in combinedrectal dilators and speculums; and my invention consists in features of.novelty hereinafter described and claimed.

Figure I is a perspective view of my improved device. Fig. II representsa front elevation of the adjusting-screw. Fig. III is a detail edge viewof the outer end of one of the arms. Fig. IV is a detail side elevationof the outer end of one of the arms. Fig. V is a detail edge view of theouter end of one of the arms, showing ad j ustable nut removed. Fig. VIrepresents a side elevation of one oi. the adjustable nuts. Fig. VIIrepresents an end elevation of the adjust-able nut. Fig. VIII is adetail view showing manner of connecting the arms. Fig. IX is a detailview of a central portion of the arms, showing connect ing mechanismremoved. Fig. X is a detail side elevation of the pivoted arms. Fig. XIis a transverse section taken on line XI XI of Figs. I and VIII. Fig.XII represents the inner face of the arm-connecting disk. Fig.

XIII represents the washer which holds arms in position.

Referring to the drawings, l represents the blades of the combineddilatorand speeulum, and 2 the arms by which the blades are operated,the blades being formed after the order of the ordinary speculum,whereby the two halves when placed together form a tubular body. Thearms 2 are pivoted near their center, the contour of the arms being suchas to permit a rocking movement on the central pivot. VThe arms 2 areprovided near their center with an annular groove 3. In this way thearms lie in the same plane, and, being spaced apart by their bearing,their shape adapts them to rock to and from each other.

i represents a disk having a central bolt 5,

Serial No. 591,574. (No model.)

which extends through a circular orifice G, formed in the arms 2, theouter end of said bolt being threaded, as shown at 7, and the portion ofthe bolt next to the disk having a smooth annular surface 8, on whichthe arms 2 rock.

9 represents an annular rib on the face of the disk e, said rib iittinginto the annular recess 3 in the arms 2. The disk 4 is held in positionby means of a washer 30, placed over the outer end of the bolt 5, and bya handnut l0, which screws onto the outer end of the bolt 5, thus byunscrewing bolt l() and removing the disk 4 the arms 2, with theirrespective dilator-blades,will be readily separated for purpose ofcleansing, dre. The outer ends of the arms 2 are forked, as shown at ll,leaving an intervening space l2. The forked portions ll are providedwith circular apertures 13, in which circular nuts 14 have theirbearing, the nuts 14C being left free to revolve in their bearings.

15 represents a right-and-left screw with a central thumb-wheel 1G, bywhich the screw is operated, the thumb-wheel being in position betweenthe outer ends of the arms 2, the nuts la having an internal thread,into which the right-and-left screw l5 operates. It will be seen by thisconstruction that as the thumb-wheel 16 is rotated the outer ends of thearms 2 are drawn toward each other or forced apart in order to expand orcontract the dilater and that the nuts le will revolve in theirbearings, so as to adjust themselves to the varying angle of the arms 2,thus avoiding any binding between the right-and-left screw and the nuts.By the means described I provide a dilator that can be set in anyposition in case it is desired to use it as a speculum and which iseasily operated without friction of the parts.

I claim as my invention l. In acombined dilater and speculum, thecombination of the blades, arms arranged edge to edge in the same planeand spaced apart, circular openings in the arms, circular nuts havingperipheral movable bearings in said openings,a right-and-lef t screwengaging said nuts, and a thumb-wheel for operating said screws,substantially as set forth.

2. In a combined dilator and spec ul u m, the

IOO

[o with the blades, spaced apart in the' sarne plane and shaped to rockto and from each other, an annular recess in said arms, a disk having anannular rib adapted to fit in said recess, a circular shoulder forming;a bearing for the arms, and a nut for holding said disk i5 and larmstogether, substantially as set forth.

OLE PEDERSON. Witnesses:

J. E. KNIGHT, J. A. RoELoFsZ.

